idnr: 644

4
2
			1
			3

Difficulty: Super easy (0)

idnr: 23

3			2


1			4

Difficulty: Super easy (0)

idnr: 8

			3
		2
	2
1

Difficulty: Very easy (0)

idnr: 661

			4
		3
	3
2

Difficulty: Very easy (0)